Clamping device.



No. 694353. Patented Mar. II, I902.

I H. 0. EVANS.

GLAMPHGDEVICE.

(Application flied Rev. 20, 1901.3

(No How.)-

ilt;

* UNITED 'TATES ATENT OFFICE.

HENRY O. EVANS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO' THOMAS DEVLIN & 00., OF PHILADELPHIA, PENNSYLVANIA, A FIRM.

CLAMPING DEVlCE.

SPECIFICATION forming partof Letters Patent No. 694,953, dated. March 1 1, 1902.

Application filed November 20, 1901. Serial No. 82,985. (No model.)

To all whom it may concern:

Be it known that I, HENRY O. EVANS, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and usefulImprovementin Clamping Devices, of which the 7 following is a specification.

My invention consists of an improvement in clamping devices, as will be hereinafter described and claimed.

Figure 1 represents a front elevation of a clamping device embodying my invention. Fig. 2 represents a side elevation, partly in vertical section. Fig. 3 represents a perspec live view of the clamping-jaw.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the clamping device, which for the purpose of illustration I have shown as applied to a foodchopper B. Said clamping device is provided with the stationary jaw O, which may be bifurcated, as shown, andwith the movable jaw D, the latter having its upper or biting face serrated, conveniently at the sides, as shown at D, such serrated portions being separated by a plain depressed portion E. The serrated portions D are situated opposite the members of the bifurcated jaw O. The frame is provided with an upright portion E, extending below the upper jaw C, and at the lower end of the latter is the arm F. It is further noted that the stationary jaw O is comparatively wide, and thereby forms an extended face, while the movable jawD is provided with the serrated portions opposite the sides of the stationary jaws. Furthermore, the shank of the movable jaw D is narrow and is confined within the slotin the uprightable jaw D, said shank being pivoted at its Passing through a screw-threaded opening in the arm F is the threaded pin K, havinga suitable handle L at its lower end, while its upper end is rounded and situated within the socket J, so as to engage the clamping-jaw at the point of the greatest leverage. It is also seen that as the end of the pin K is situated within the socket J undue lateral movement of the clamping-jaw is avoided, since the end of the pin holds the jaw in place.

From the foregoing it will be seen that I provide a clamping device in which one of the jaws although movable is prevented from becoming displaced not only by the pivot upon which it turns, but also by reason of the actuating-pin K engaging the socket thereof, and, furthermore, that the said screw-pin K engages the jaw, D at the extreme end of the same, thus applying full power of the screwpin K at the point of maximum leverage.

Having thus described my. invention, what I claim as new, and desire to secure by Letters Patent, is I In a coupling device, a frame havinga stationary jaw and arm, said stationary jaw hav ing lateral extensions, a slot in said frame, a movable jaw having a shank pivoted within said slot, a socket in the lower face of said movable jaw, and a screw-pin carried by said arm and having one end situated within said socket, said socket and slot in connection with the screw-pin and shank serving to prevent lateral movement or displacement of said movable jaw.

HENRY O. EVANS.

Witnesses:

J OHN A. WIEDERSHEIll-I, O. D. MGVAY. 

